function srcoll(){
    var _scroll = document.getElementById("top_right"),
        _inner1 = document.getElementById("inner1"),
        _inner2 = document.getElementById("inner2"),
        speed = 20;
    _inner2.innerHTML = _inner1.innerHTML;
    function marquee(){
        if(_inner1.offsetHeight<=_scroll.scrollTop){
            _scroll.scrollTop = 0
        }else{
            _scroll.scrollTop++;
        }
    }
    var interval = setInterval(marquee,speed);
    _scroll.onmouseover = function(){
        clearInterval(interval);
    }
    _scroll.onmouseout = function(){
        interval = setInterval(marquee,speed);
    }
}
srcoll()